Ball spinner



FIG. 1 is a perspective view showing my new design for a ball spinner;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a rear view of FIG. 1;

FIG. 4 is a front view of FIG. 1; and,

FIG. 5 is a bottom view of FIG. 1. 

The ornamental design for a ball spinner, as shown and described. 